Product Description
Working Principle of Off-Grid Solar Power Generation System
1. Core Components and Their Functions
Solar Panels (Photovoltaic Modules)
Core function: Convert sunlight into direct current (DC).
Controller (Photovoltaic Charge-Discharge Controller)
Core function: Regulate the flow of electrical energy and protect the battery and system safety.
Battery Bank
Core function: Store the electrical energy generated by solar panels for use when there is no sunlight.
Inverter
Core function: Convert the direct current (DC) output from the battery into alternating current (AC) commonly used in household appliances.
Loads (Household Appliances)
These are electrical devices such as lamps, refrigerators, washing machines, etc., which obtain alternating current through the inverter to work.
2.Working Process (in a daily cycle)
Daytime Power Generation and Charging Phase
Sunlight irradiates the solar panels, generating direct current;
The direct current is processed by the controller, and part of it is directly supplied to DC loads (such as DC lamps, routers);
The remaining electrical energy is regulated by the controller to charge the battery bank for storage.
Night or Cloudy Day Power Supply Phase
When there is no sunlight, the solar panels stop generating electricity;
The controller switches to discharge mode, and the battery releases direct current;
The direct current is converted into alternating current by the inverter to supply AC loads in the home;
The controller monitors the battery power in real-time and automatically cuts off the power when it drops to the protection value to avoid over-discharging.
3.Key Points in System Design
Off-grid systems need to be "tailor-made" according to household electricity demand. The core parameters include:
- Power Generation: The total power of solar panels must match the average daily electricity consumption (considering local sunshine duration and seasonal differences);
- Energy Storage Capacity: The battery must meet the electricity demand at night and during consecutive cloudy and rainy days (usually storing 3-7 days of electricity consumption);
- Inverter Power: It must cover the maximum instantaneous power of the household (such as the peak power when the air conditioner starts).

usage scenarios
Usage Scenarios
Product Parameters

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PV module Cell Type:Mono N - Type No. of Cells:132pieces(6*22) Module Dimensions:2382*1134*28mm Weight:28.2KG Pmax(W):625W Vmpp(V):41.4V Impp(A):15.11A Voc(V):48.6V Isc(A):16.14A
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Lithium Battery(LFP) Model:48V200AH Size:682*465*276mm DOD:80% Life cycle:6000 Charge Voltage:40V Discharge Voltage:44.8V Max Charge/Discharge Current:50/100A Design life:>10 year Communication protocols:CAN,RS485 Safety Certificate:CE,TüV,IEC62619,UN38.3,ROHS Product Feature:19 inch standardized design,3U height; 3.2V100AH square aluminum core,higher energy density; Intelligent system control,more stable performance; Extrusion design,longer life
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Hybrid Storage Inverter Specifications: 10KW/48V Model: SEI - 10K - SP Number of units that can be paralleled: 1 to 6 units Dimensions: 130*445*630mm Weight: 27KG Protection level: IP65 Operating temperature range: -25 to 60°C, derating when the temperature is above 45°C Cooling method: Heat sink + intelligent air cooling Warranty period: 5 years
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Auxiliary materials PV:PV1 - F 1*4mm² Power distribution box:20KW Auxiliary materials:Grounding, wire threading pipe, MC4 connector
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Company Profile
BAODE LIGHTING GROUP CO., LTD.
Honesty, hard work, and keeping pace with the times
Founded in 2000, Baode Lighting Group Co., Ltd. has evolved into a high-tech enterprise after over 20 years of development, specializing in R&D, design, production, engineering, service, and O&M of outdoor lighting equipment, solar/street/smart/high-pole lights, steel pipe power towers, communication towers, traffic equipment, landscape lighting, and photovoltaic intelligent applications.
The group has won Gaoyou City's "Mayor Quality Award" twice, is a Jiangsu Province "Service-oriented Manufacturing Demonstration Enterprise", and a frequent supplier for national key projects. It holds titles like Gaoyou's "Top 20 Industrial Enterprises", Yangzhou's "Top 100 Private/Industrial Enterprises", etc. Its "Luyou" brand is a "Jiangsu Famous Trademark", with products recognized as "Jiangsu Famous Brand Products". As a Jiangsu Industrial Design Center and Enterprise Technology Center, it owns over 100 patents (nearly 20 invention patents) and is a Yangzhou "Intellectual Property Advantage Enterprise".
With multiple professional qualifications (e.g., Grade-I urban road lighting contracting, Grade-I lighting design), it has passed ISO 9001/14001/45001, GB/T27922 (5-star after-sales), information security, and product certifications (CCC, CQC, EN ISO 3834-2). Collaborating with China Railway, JinkoSolar, etc., its products sell to 100+ countries and China's provinces, undertaking landmark projects like Beijing New Airport, China-North Korea Yalu River Bridge, and 200+ airport high-pole lighting projects. Upholding "integrity, diligence, and innovation", it aims to enhance core competitiveness, provide excellent services, and boost "Made in China".

Project Cases
Product Order Notice
About delivery Due to the special nature of customized products, we will arrange for workshop production and shipment as soon as possible after placing the order (if urgent orders are required, please contact customer service). The price does not include tax shipping. Please add tax points when issuing invoices. For details, please consult customer service!
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Regarding the arrival of goods After the product arrives, please check the quantity and quality of the goods. If you have any questions, please feel free to contact our company.
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About color difference The store images are real shots, and the different colors displayed due to factors such as camera equipment, displays, and lighting are normal phenomena.
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FAQ
FAQ
1.How should lithium batteries be used in low-temperature environments?
It can be discharged at -20ºC to 0ºC, but the charging and discharging efficiency decreases. It is recommended to turn on the battery heating function (optional for some models).Do not use at temperatures below -30 ºC to prevent permanent damage to battery performance.
2.Are lithium batteries environmentally friendly? Does it contain heavy metals?
They are made of lithium iron phosphate material, free of heavy metals such as lead and cadmium, the material is recyclable and complies with CE and UN38.3 certifications.
3.What is the warranty period for lithium batteries?
Generally, a 5-year or 10-year warranty is provided (with slight variations for different models). Please refer to the product manual for specific details.